<script setup>
import { User, Lock } from "@element-plus/icons-vue";
import { ref } from "vue";
import { ElMessage } from "element-plus";

//控制注册与登录表单的显示， 默认显示
const isRegister = ref(false)

//定义数据模型

const loginData = ref({
  username: "",
  password: "",
  rePassword:"",
});
//绑定数据
const rePasswordValid = (rule, value, callback) => {
    if (value == null || value === '') {
        callback(new Error('请再次确认密码'))
    }else if ( value!== loginData.value.password) {
        callback(new Error('两次输入密码不一致'))
    }else{
        callback()
    }
}
//定义表单校验规则
const rules = {
  username: [
    { required: true, message: "请输入用户名", trigger: "blur" },
    { min: 5, max: 20, message: "长度为5~20位非空字符", trigger: "blur" },
  ],
  password: [
    { required: true, message: "请输入密码", trigger: "blur" },
    { min: 5, max: 20, message: "长度为5~20位非空字符", trigger: "blur" },
  ],
  rePassword:[
    {required: true, message: '请再次输入密码',trigger: 'blur'},
    { validator: rePasswordValid, trigger: 'change' }]
};
//表单数据校验
//调用后台接口
import { loginService,registerService } from "@/api/admin.js";
//登录函数
import { useTokenStore } from "@/stores/token.js";
import { useRouter } from "vue-router";
const router = useRouter();
const tokenStore = useTokenStore();
const login = async () => {
  //调用接口，完成登录
  let result = await loginService(loginData.value);
  // alert("登录成功")
  ElMessage.success("登录成功");
  //把得到的token存储到pinia中
  tokenStore.setToken(result.data);
  //跳转到首页 路由完成跳转
  router.push("/");
};

const register = async()=>{
  let result = await registerService(loginData.value)
  ElMessage.success("注册成功");
  isRegister.value = false
}

//清空数据模型
const clear = ()=>{
  loginData.value={
    username: "",
    password: "",
    rePassword:"",
  }
}
</script>

<template>

  <el-row class="login-page">
    
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      
      <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="loginData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="loginData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="loginData.password"></el-input>
                </el-form-item>
                <el-form-item prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="loginData.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clear()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
      
      <!-- 登录表单 -->
      <el-form
        ref="form"
        size="large"
        autocomplete="off"
        :model="loginData"
        :rules="rules"
        v-else
      >

        
      
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            placeholder="请输入用户名"
            v-model="loginData.username"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="loginData.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <!-- <el-checkbox>记住我</el-checkbox> -->
            <!-- <el-link type="primary" :underline="false">忘记密码？</el-link> -->
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button
            class="button"
            type="primary"
            auto-insert-space
            @click="login()"
            
            >登录</el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true;clear()">
                        注册 →
                    </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background: /* url('@/assets/logo2.png') no-repeat 60% center / 240px auto, */ url("@/assets/login .jpg")
      no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>